505611103 has 2 divisors, whose sum is σ = 505611104. Its totient is φ = 505611102.

The previous prime is 505611091. The next prime is 505611131. The reversal of 505611103 is 301116505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505611103 - 2²¹ = 503513951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505611133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252805551 + 252805552.

It is an arithmetic number, because the mean of its divisors is an integer number (252805552).

Almost surely, 2^505611103 is an apocalyptic number.

505611103 is a deficient number, since it is larger than the sum of its proper divisors (1).

505611103 is an equidigital number, since it uses as much as digits as its factorization.

505611103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 505611103 is about 22485.7978066156. The cubic root of 505611103 is about 796.6585119835.

Adding to 505611103 its reverse (301116505), we get a palindrome (806727608).

The spelling of 505611103 in words is "five hundred five million, six hundred eleven thousand, one hundred three".